In a message dated 9/28/2005 8:05:21 AM Eastern Daylight Time, scot...@yahoo.com writes:
> So, here's my point: I am thinking about developing a > home made injection system for my motor. The throttle > bodies will be located on the top of the engine. My > air would be pulled from an air duct in the cowling, > and since most of my flying would be in Florida, and > it does get very humid sometime on cold days, icing > would be a concern, I would think. SO, that being > said, would I need to have carb heat pulled from the > manifold, or would "alt static air" from inside the > cowling suffice? Your opinion? > Scott, By the term "throttle bodies" I don't know if you mean throttle plates with injectors above the intake valves, or "throttle body Injection" which mounts the injectors above the butterfly valves. If that happens to be the case I would definitely use lots of carb heat off of the exhaust. You could actually watch ice form on the old GM 2.8 tbi (with the air filter removed) it is caused by the expansion of air and vaporization of the fuel, just like the expansion valve or metering tube in a refrigeration system. Best Regards; Riley Collins Rutledge, TN KR2SS lycoming
